Insulated projecting-lantern.



G. M. LUNGRE'N.

INSULATED PROJEGTING LANTERN.

APPLIOATION FILED 001'. 10, 1907.

Patented Mar. 29, 1910.

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INSULATED PEOJEGTING LANTERN.

IAPPLIOATION FILED OUT. 10, 1907- 953,096, 7 Patented Mar. 29, 1910.

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,better protect the vaporizing UNITED STATES, PATENT OFFICE.

pHAnLns M.

LUNG-EEK, 0F BAYONNE, NEW JERSEY, ASSIGNQR TO THE RAILWAY UTILITIES COMPANY, A CORPORATION OF NEW JERSEY.

INSULATED PROJECTING-LANTERN.

Specification of Letters Patent. Patented Mal. 29, 1910.

Application filed October 10, 1907. Serial No. 396,849.

son an State of New Jersey, have invented certain new and useful Improvements in. Insulated Projecting-Lanterns,;of which thefollowing is a full, clear, and exact description, suchas will enable others skilled in the artto which it appertains to make and use the same.

This invention relates to means for pro- Ytain improvements acting lanterns described and c aimed ingn co'- ending ap lication, filed 'May '20thgfi190 Senal l'o.

This invention objects an improved construction adapted to arts of the burner against undue cooling w en the Ian tern is being used under severe conditions.

This invention particularl seeks to provide a device of the nature isclosed, which will becharacterized by a high degree of durability and efficiency, and which as to v structure will-be as simple and compact as possible, being composed of but few parts considerin the ends attained.

Other 0 jects and advantages will be in part obvious from the accompanying drawings a'ndin part pointed out in the followings exemplifying certain of the more note f ing descriptlon. v

The invention accordingly consists in the features of construction, combination of ele ments and arrangement of parts which will be exemplified in the construction hereinafter set forth,and the scope of the applica tion of which will be indicated in the fol-' lowing claims.

. In order that this invention may be more fully understood and made comprehensible to others skilled in its relating arts, drawworthy'emb i'ments have been annexed as a part of this disclosure and, wh le many changes therefrom may .be made within the intended scope of the appended claims. the

shown embodiments will ordinarily be preferred in practice, and will be found to be capable of rendering eflicieht service in practiee. l

In such drawings,-like characters of refervence denote corresponding'parts throughout all'the views of which;

and showingmore clearly certain detai has in view among other Figure 1 is a longitudinalsectional elevation showing in detail one embodiment of this invention in which a superheating coil partly encircles the do ending burner tube below the injector and a so coils around above the burner, and in which an inner cylindrical shell is utilized asa heat insulating means so as to prevent any undue cooling of the vaporizing parts of the structure. ,Fig. 2 is a transverse sectional elevation taken midway through the burner shown in Fig. 1

the a construction not positively apparent from Fig. 1. By way of affording a better grasp of the nature'and purposes of this invention, it-

may at the outset be ointed out that one df the mostserious di culties encounteredin j devices .of this character resides in the fact that any undue cooling of the superheatmg orva orizlng arts of the burner may result in a ailure o the burner to properly operate. This is primarily due to the fact that in such an event, more or less liquid instead of vapor passes through the burner-thus producing an imperfect combustible mixture. Such undue cooling tends to take place either in very cold weather or while the lantern is moving through the air at a very high ve-' locity. As a result of the extensive investigations and ex riments made by me in the effort to solve t is problem, I have succeeded 'in devising the herein disclosed invention Q and have found that the same operates satis factorily even when subjected to the most severe conditions.

Proceeding now with a more detailed description of-the herein disclosed illustrative embodiment of this invention, with such occasional reference to the drawings as may promote a better understanding of the same, 1 designates an intermediatefscction of the tubular barrel constituting the outer or body portion of a projecting lantern made in accordance wlth my invention.

The forward end of the lantern barrelis.

formed preferably of an annular section 2,

which may be of any desired form, such as that shown on the drawings, and wh1ch may be secured tothe Intermediate section A transpar 1 in any appropriate manner. ent partitio 3, which is preferably dished so as to be bet er able to resist wind pressures and other strains common to devices of this character, is peripherally seated on the forwardsection 2 as shown, and a reflector 4, f

for directly receiving the forwardly radiated stray. rays of light emitted; by the mantle,

' may be utilized to better secure thedished glass 3 in place. An annular ring-5 having an inturned outer rim 6 bearing against the outer periphery of the glass 3, may be secured to the section 2 in any desired manner as by means of the'screws ,7.

The rear end of the lantern barrel comprises a cap 8 which is secured to the intermediate-section 1. A light projecting means 9, ofany approved type such as a lens reflector, will preferably .be adjustably mounted in the lantern barrel so as to en-- .able its focus to be very readily brought into the predetermined locality, it being understood that thereby slight departures in the way of proportions of the parts of the. lantern may be very easily compensated for. f To this end, the reflector may be mountedon'an annular member 10, which is adjustably positioned with respect to the lanternbarrel by means of suitable screws .11 in engagementwith the elongated slots 12 in the periphery of the annular member .10. A hub,l 3 extends from the centerof the. lantern barrel.

the reflector .at itsrear, and ,isinscrewthreaded engagement with a complementary hub- 14 carried by the cap 8 at the end of As will be perceived,

7 this construction enables the reflector to be very easily brought into any predetermined adjustment relatlvely to the mantlemounted on the end of the burner tube by merely rotating the annular ring 10, and then by enable the burner parts to be maintained atfixing it against further rotation by means of the aforesaid screws 11.

Within the lantern barrel and spaced a slight distance therefrom is a cylindrical shell 15 which serv es as a heat insulator to a temperature sufficiently high to effect vaporization of combustible liquid, irrespective of the actual temperature of the lantern barrel. This mounting will preferably be accomplishedby means of a few studs 16 which project from the cylindrical shell 15 and terminate in abutment with the inner periphery of the lantern barrel. Screws 17 sufiice to clamp and secure the said parts together, as may be understood from the drawings. To further insure the inner shell 1 and 2. Preferably, the-burner is mounted directly upon the heat insulating shell 15,

and to that end such burner comprises a body portion 19 having flanges 20, which rest upon the cylindrical heat. insulating shell around an upper aperture orvent 21. The burner tube 22 depends from the body portion and passes through the aperture21 into the interior of the heat insulating shell and terminates a slight distance above the focus of the reflector. The mantle 23 which is preferably suspended directly from the end of the burnertube, coincides in position with the focus of the reflector, so as to enable a powerful and concentrated beam of light to be projected from the lantern.

Inasmuch as the preferred form of burner deals with a liquid fuel, it is essential that such fuel should be converted, into a gas prior to being intermingled'withfair by means of the inspirator." Accordingly, thisinvention proposes .a superheating coil into which the liquidjis initially fed,- and within the coils of which it finally becomes thoroughlyvaporized prior to being projected through the injector. Thus, the. liquid which is received by the supply pipe 24,"

shown in Fig;;2, is first caused tocirculate through the coils 25 of the upper portion of I theburner, and then through the eoils26 encircling the depending burner tube. The coil 25 may be formed of a thin ductile metal, and, in order to provide ainaximum of vaporizing area, I preferably inclose a metallic net-work 27 within-said coils. The discha'rgeend 28 of the upper preheating coil 25 may be suitably connected to the lower superheating coil '26, and this may conveniently be done by inserting the end 28 .of the upper coil into an appropriate recess in the body portion 19 of the burner, and by similarly arranging the complemena temperature as possible, it is encircled around the depending burner tube directly within the path of the rising products of combustion. The terminal 30 of the lower coil passes into the body portion, andopens into a channel 31 which is in communica-. tion' with the port 32 of the needle valve.

The needle 38 of this valve may be formed of an ordinary sewing needle by mounting the same on a shank 34 and retaining it in tary end 29 of the lower superheating-coil.

place by means of suitable screw 35. A cap 36 forms a tight union to prevent the escape I of vapor and enables the needle valve to be adjusted in position by means of the squared head 37. Access to said-head may be readily had by swinging to one side the cap 38 provided in the rise 3110f the ventilator overlying the burner. The air necessary in forming the combustible mixture may be received through the transverse channel 40 in the body portion of .the burner, and may be regulated in quantity by means of the adjustable valve 41. The vapor fed from the needlevalve projects across the delivery end of the channel 40, thus producing a combustible mixture, and this mixture is ,then fed to the mantle through thc'bore 42 1 of the burner tube.

As has been already observed, the/vapor burner rests directly upon the heat-insulating shell and its upper or body portion V is spaced a distance from the adlacent portions of the outer lantern barre and ventilator. thereon. As a further means of mainlifllnln the temperature of the burner, I also i provid e a cylindrical shell 43 mounted around the body portion 19 of the burner so as to inclose the upper coil of the vaporizer and serve as a chimney for the rising prodnets of combustion. The said shell 43 has an open top 44' to permit such products to escape'into the ventilator and to enable access to be had to the adjustable member 34 .of the needle valve.

The lantern barrel '1 has-air aperture 45 I in its upper portion to accommodate the projecting parts of the vapor burner and over lying-such opening is the ventilator above mentioned. This ventilator comprises an outer lower shell 46 mounted directly upon the lantern barrel and may also comprise a concentric shell 47 arranged on said lantern barrel andconnected to the outer ventilator shell 46 at its upper end, as will be more clearly apparent from the drawings. The dome 39 is spaced slightly above the upper extremity. of the inner and outer concentric shells 46' and 47, thereby providing an annular air outlet 48. An annular battle plate 49' protects the annular exit 48 against violent drafts.

The under side of the lantern barrel 1 provides an air inlet 50 which is preferably protected by means of a cap 51 having air inlet 52 as will be obvious from the drawings. Inasmuch as a small amount of liquid fuel passes through the burner and drops from the dependin burner tube during the initial starting oft e device, this invention provides meansfor accommodating this excess fuel. Thus, as shown by Fig. 1, a drip cup 53 is carried by the inner concentric heatinsulating shell 15 and this drip cup may. either retain such fuel, as by means of the asbestos wicking '54 shown in Fig. 2, to permit of its being burned to assist the prelimi- 'naryheating of the overlying burner, or it may be provided with a drainpipe 55 as shown'byFig. -1 so-as to enable such excess fuel to be received in asuitable storing vessel and/saved. v

.It'willthus be erceivedf'that I have devised a sim Is an effective projecting lantern ada to to maintain a mantle in a state of-incan escence by using a liquid fuel such as gasolene. or alcohol, Thisfuel is first vaporized and. then admixed with air to form the combustible gaseous mixture whichserves to maintain the mantle ina state of meandescence- The products of combustion rise and sweep past the vaporizing coils of the burner and ultimately emerge into the overlying ventilator. The parts thus heated, being mounted on the heat-insulating shell 15,- are enabled to retain their heat irrespective of the actual temperature of the lantern barrel. The latter admits ample air for both carrying on the filial combustion at the end of the burner tube and for supplying pure air to theinjector. Thus a portion of the air within the lantern body rises along the exterior of theshell 43 and, together with the products of combustion discharged by the upper end of such shell, escapes from the ventilator.

As manygchanges couldbe made in the above construction and many apparently widely different embodiments of this invention could be, made withoutdeparting from the scope th'eref, it 'is intended that all matter containexv in the above description or shown in 'tlic accompanying drawings shallbc interpreted as illustrative and not in a limiting sense.

Having described my invention what I claim as new and desire to secure by Letters Patent is:

1. A device of the nature disclosed com 'prising in combination, a lantern-body hav ing in its forward end a transparent partition, a heat-insulating cylinder concentrically spaced away from the wall of said lantern-body within the same, a reflector carried by said lantern-body and spaced away from .the rear of said cylinder, a vapor-burner tern-body and space away from the wall thereof in'tcrme iatc its ends whereby it may serve/as a. heat-insulating means a reflector s aced awa 'from the rear end of said shell a vapor-burner body-portion carried'by said shell, :1. burner-tube extending from said body-portion into said lanternbody and having its delivery end terminat- I ing inidwa' the walls' thereof, a su erheater for t e combustible material-supp ied to said burner, an inspirator for comminhug the vapor passing through said superieater, with air and arran ed to project the resultant mixture into sai burner tube, and a relatively small incandscing means burner including a burner tube extending "arranged to enable the products of combus-' interposed between said superheating device 40 mounted adjacent the delivery end of said burner-tube in the focus of said reflector and tionto discharge toward said superheater.

A devlce of'the nature disclosed comprising 1n combinatlon, a lantern-body having in its forward part a transparent part1- tion, a heat-insulating shell arranged within said lantern-body and spaced away therefrom, a reflector spaced away from the rear end of said shell, a vapor-burner located in the upper part of said lantern-body and in- 1 cluding a depending burner-tube having its delivery end located approximately centrally withinv said lantern-body, a superheater arranged Within saidheat-insulating shell for conveying combustible material to said vapor burner and located within the "path of the escaping products of combustion, and 'a'mantle mounted adjacent the de-. livery end of said burner tube in the focusv of said reflector. r 4;. A device of the" nature disclosed comprising in combination, a lantern bodyh'aving in its forward portion a transparent partition andv in its rear a reflector, a vapor burner including a burner tube extending into said lantern body and having its delivery end located midway the walls of said body closely adjacent the focus of said reflector, a device for superheating fluid supplied to said vapor burner, an inspirator for commingling with air the combustible vapor formed by said superheater and arrangedto project the resultant mixture into said burner tube, a mantle mounted vadjacent the delivery end of said burner tube in the focus of said reflector; and a heat, insulating shell and said lantern body spaced from said shell.-

5. A device of the natur'edisclosed comprising in combinatiom'a lantern body having in its forward end a transparent partition, and in its rear a reflector, a vapor said reflector being into saidlantern body and having its delivery end terminating near the focus of said reflector, a mantle mounted on said delivery end in the focus of said reflector; aheatinsulating shell interposed between said burner tube and said lantern body and spaced away from the latter, and a drip cup mounted on said shell and underlying said,

mantle.

, 6. A device of the nature disclosed com-'- prising in combination, a lanternbody hav-i ing in its forward portion a transparent partitlon and in its rear a reflector, a vapor burner including a burner tube extend ng downwardly into and, terminating substantially midway the walls of said body slightly above the focus of said-reflectory'an inverted relatively, compact incandescent. structureconsisting of a network of refractory'oxids mounted adjacent the delivery end of saidburner tube in the focus of said reflector, an inspirator for projecting a combustible gaseous mixture'into said burner tube, one or more air conduits leading to said inspirator from a point withoutthe path of the escaping products of combustion and a heatcombustible material supplied to said burner, I

an inspirator for commingling the Vapor passing through said superheater with air and arranged to project the resultant. mix-" ture into said burner tube, one or more air conduits leading to said inspirator from a point without the path of the escaping products of combustion; and a heat-insulating shell interposed between said superheater and saiddantern body, I

8. A device of the nature disclosed comprising in combination, a lantern body hav ing in its forward end a transparent parti tion, and in its rear a reflector, a vapor burner located in the upper 'part of said lantern body and including a burner tube depending thereinto and terminating slightly above the focus of said reflector, an inspirator for commingling combustible vapor with air and forrprojecting the resultant mixture into said burner tube, an inverted incandescent reticulated structure of refractory oxids mounted-adjacent the delivery end of said burner .tube in the focus of said reflector, a superheater overlying said structure and arranged within the path of the escaping products of combustion whereby it will-be automatically maintained at a temperaturesufliciently high to superheat the combustible material passing therethrough, one or more air conduits leading to said inspirator from a point without the path of the escaping products of combustion; and a heat-insulat ing shell'interposed between said superheater and said lantern body and spaced a distance from the latter.

. 9. A device of the nature disclosed comprising in combination, a lantern body, an inner concentric shell, a vaporburnermounted upon the upper portion thereof, including a dependin burner tube, a superheating coil aroun said tube-within said shell andart incandescent mantlemounted adjacent the-delivering. end of the burner -tube.

'l0.- A device of the nature disclosed comprising in combination,- a lantern body, an inner heat-insulating shell spaced away from the lantern body by relatively few. metallic supports, and a vapor burner mounted upon said shell. I

i 11. A device of the nature disclosed comprising in combination, a lantern body, an inner heat-insulating shell s acedavvay from the lantern body by relative y few supports,

a vapor burner mounted upon the 'upcper a portion of the heat-insulating shell, an multiple channel ventilator surrounding the vapor burner.

' I cylindrical she 12. A- device of the nature disclosed comprising in combination, a lantern body, a ventilator overlying said lantern body, -a

l concentrically arranged Withinsaid lantern body and spaced therefromby its supports, and a vapor burner carried byan upper portion ofsaid shell,.

said vapor burner having a preheating upper portion projecting into said ventilator.

13. A device of the nature disclosed comprising in combination, a lantern body, a ventilator mounted thereon, a shell concentrically arranged within said lantern bod and a vapor burner mounted on said she said vapor burner having a preheatin upper portion protruding into said ventilator, and a chimney interposed between the protruding portions of said burner and the adjacent parts of said ventilator, said chimney being arranged to discharge the products of combustion into the upper portion of said ventilator.

In testimony whereof I affix my signature, in the presence of two witnesses.

CHARLES M. LUNGREN. Witnesses: I

H. M. SEAMANB Josnrnmn SmuJNenR. 

